Not to mention you also posted in the Wrong forum to ask this question.As all Spoiler and Ending related things belong in the Steller Graveyard.You
have to keep in mind that not Everyone has beaten the game,and some just dont want to be spoiled about it.

The answers to your questions,the good ending I avoided killing ANY allies at all,just to be on the safe side.I've heard Prinnies dont count if you
throw them,but its more than likely mentioned somewhere on this forum,so dont hold me to that....in what I'm Really confident about,is what I said
about not killing any allies at all.